The size of Warrentinna is approximately 36.4 square kilometres. It has 6 parks covering nearly 59.9% of total area. The population of Warrentinna in 2006 was 358 people. By 2011 the population was 174 showing a population decline of 51.4% in the area during that time. The predominant age group in Warrentinna is 0-9 years. Households in Warrentinna are primarily childless couples and are likely to be repaying $800 - $999 per month on mortgage repayments. In general, people in Warrentinna work in a managers occupation. In 2006, 78.5% of the homes in Warrentinna were owner-occupied compared with 79.4% in 2011.